EP 0196959 B1 19920311 - RADIATION PROJECTOR DEVICE WITH A HIGHLY EFFICIENT AND UNIFORM FLUX IN GIVEN APERTURE ANGLES, IN PARTICULAR FROM A POINT OR QUASI POINT SOURCE
Title (en)
RADIATION PROJECTOR DEVICE WITH A HIGHLY EFFICIENT AND UNIFORM FLUX IN GIVEN APERTURE ANGLES, IN PARTICULAR FROM A POINT OR QUASI POINT SOURCE
Publication
Application
Priority
FR 8504047 A 19850319
Abstract (en)
[origin: EP0196959A1] The device produces in a given central working plane a flux having an aperture angle of a predetermined value, in which the intensity of the projected radiation varies from its maximum to a value of about one half of the latter. The device comprises a source of radiation (4) and a reflector (5, 6). <??>The reflector comprises: - either a front part consisting of a mirror of the conoid or pyramidal type having at least two opposite reflecting surfaces (5, 6) which are dimensioned and positioned in space in order that the geometric characteristics of their profile in a mirror section, by a plane of symmetry, substantially satisfy a given system of dimensioning relationships, - or at least one fraction of its rear part (31) reflecting and having at least one meridional section in the form of an arc of a circle axially centred in front of the source in order that the reflected radiation has a point of convergence situated in front of the outermost part of the source and from which this reflected radiation extends with a substantially uniform distribution over an angle which is furthermore such that the total flux finally obtained is spread over the so-called aperture angle of the device with the desired value, - or both these arrangements at the same time. <IMAGE>
IPC 1-7
IPC 8 full level
G21K 1/06 (2006.01); F21V 7/00 (2006.01); G02B 5/00 (2006.01); G02B 19/00 (2006.01)
CPC (source: EP US)
G02B 5/00 (2013.01 - EP US); G02B 19/0019 (2013.01 - EP US); G02B 19/0023 (2013.01 - EP US); G02B 19/0047 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0196959 A1 19861008; EP 0196959 B1 19920311; AT E73550 T1 19920315; AU 5488686 A 19860925; AU 589611 B2 19891019; DE 3684162 D1 19920416; ES 553162 A0 19870401; ES 8707803 A1 19870401; FR 2588669 A1 19870417; FR 2588669 B1 19901109; IE 860698 L 19860919; JP S61262700 A 19861120; US 4991072 A 19910205
DOCDB simple family (application)
EP 86400565 A 19860318; AT 86400565 T 19860318; AU 5488686 A 19860319; DE 3684162 T 19860318; ES 553162 A 19860319; FR 8504047 A 19850319; IE 69886 A 19860318; JP 6192086 A 19860319; US 42354689 A 19891013